Clustering in neutral ecology
Clustering in neutral ecology
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DOI：
10.1103/physreve.68.061912
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发表时间：
2003-12-01
影响因子：
2.4
通讯作者：
Vallade, M
中科院分区：
文献类型：
--
作者：
Houchmandzadeh, B;Vallade, M
“中性生态学”模型假定同一营养级的所有生物都有相同的死亡、复制、迁移和突变率，并服从零和规则。我们通过精确的分析方法表明，在这个模型的假设下，生物体倾向于聚集并形成集群。当维数小于或等于2时，集群的平均规模会增长，如果分配足够的时间，一个物种将统治整个生态系统。在维度d=3（或更高）时，达到平衡，并且集群大小按幂律分布。
The "neutral ecology" model assumes that all organisms in the same trophic level have the same death, duplication, migration and mutation rates and are subjected to a zero sum rule. We show by exact analytical methods that under the assumption of this model, organisms tend to aggregate and form clusters. At dimensions less than or equal to 2, cluster size grows in average and one specie will dominate the whole ecosystem if enough time is allocated. At dimension d=3 (or higher), an equilibrium is reached and cluster sizes are distributed as a power law.